Balloon centerpiece



FIG. 1 is a perspective view of a balloon centerpiece in accordance with my invention;

FIG. 2 is a top plan view thereof;

FIG. 3 is a left side elevational view thereof, the right side being a mirror image;

FIG. 4 is a front elevational view thereof, the rear view being a mirror image; and,

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a balloon centerpiece, as shown and described. 